NOW that Bill Murray (above) is officially divorced, he’s free to hit on pretty young things. Murray was having a late dinner at Steak Frites in the Village Friday night around 11 with five of his six sons when he spied a hot Scarlett Johansson-look-alike sitting near the bar. Our spy said Murray, who was drinking hot tea all night, “walked over to the woman, tapped her on the shoulder and started chatting about the Michigan State vs. Kansas basketball game. When his kids got restless he counted his losses, shook her hand and left.”